When you ask "What number is halfway between 87 and 726?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=87 and Y=726.
To find the number halfway between 87 and 726, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 87 and 726 into our formula, we get:
(87 + 726)/2 = 406.5
Thus, the number halfway between 87 and 726 is 406.5.
To check that our answer is correct, we subtract 87 from 406.5 and subtract 406.5 from 726 and compare the two numbers:
406.5 - 87 = 319.5
726 - 406.5 = 319.5
As you can see, the halfway number is 319.5 higher than 87 and 319.5 lower than 726. Therefore, our halfway between answer of 406.5 above is correct.
Halfway Between
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Halfway Between 87 and 727
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